/*
 * Licensed to the University Corporation for Advanced Internet Development,
 * Inc. (UCAID) under one or more contributor license agreements.  See the
 * NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The UCAID licenses this file to You under the Apache
 * License, Version 2.0 (the "License"); you may not use this file except in
 * compliance with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.opensaml.xmlsec.config.impl;

import org.apache.xml.security.Init;
import org.opensaml.core.config.InitializationException;
import org.opensaml.core.config.Initializer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Initializer which initializes the Apache XML Security library (Santuario).
 */
public class ApacheXMLSecurityInitializer implements Initializer {
    
    /** Logger. */
    private Logger log = LoggerFactory.getLogger(ApacheXMLSecurityInitializer.class);

    /** {@inheritDoc} */
    public void init() throws InitializationException {
        final String lineBreakPropName = "org.apache.xml.security.ignoreLineBreaks";
        // Don't override if it was set explicitly
        if (System.getProperty(lineBreakPropName) == null) {
            System.setProperty(lineBreakPropName, "true");
        }
        if (!Init.isInitialized()) {
            log.debug("Initializing Apache XMLSecurity library");
            Init.init();
        } else {
            log.debug("Apache XMLSecurity library was already initialized, skipping...");
        }
    }

}
